Boundary Managed Service Lead

About the Role

The Boundary Managed Service Lead oversees the design, implementation and ongoing management of boundary security and managed services protecting defence organisations’ network perimeters. The role includes managing boundary security operations, leading service delivery teams, ensuring SLA compliance, and maintaining the security posture of critical defence network boundaries.

Key Responsibilities

• Oversee end-to-end boundary managed service delivery including design, implementation, and operations.
• Manage boundary security SLAs, ensuring 100% compliance with availability, performance and security targets.
• Lead boundary security operations team, ensuring round‑the‑clock monitoring and threat detection.
• Manage boundary service P&L and resource allocation across multiple customer accounts.
• Establish and maintain boundary service quality standards and operational procedures.
• Design and implement boundary security architectures, including firewalls, intrusion detection/prevention, and DDoS protection.
• Architect boundary security solutions aligned with MOD security requirements and defence standards.
• Design boundary traffic inspection, content filtering and advanced threat protection.
• Lead boundary security assessments and vulnerability remediation.
• Implement MOD‑compliant boundary configurations and security baselines.
• Lead boundary security incident detection, investigation and response.
• Manage security alerts, anomaly investigation and threat escalation.
• Coordinate incident response across boundary security team and customer security teams.
• Conduct post‑incident reviews and implement preventative measures.
• Maintain security event logs and provide compliance reporting to MOD.
• Evaluate and implement boundary security technologies and tools.
• Design automation and orchestration for boundary security operations.
• Lead service improvements and operational efficiency initiatives.
• Manage technology refresh and boundary appliance upgrades.
• Develop and implement boundary security monitoring and reporting dashboards.
• Lead and develop boundary security operations teams.
• Manage customer relationships and provide executive‑level reporting on boundary security posture.
• Conduct customer reviews and communicate security recommendations.
• Identify service expansion opportunities and support account growth.
• Ensure boundary services maintain compliance with MOD security standards and regulatory requirements.
• Implement and maintain security event logging and audit capabilities.
• Support security compliance assessments and third‑party audits.
• Manage personnel vetting compliance for boundary security team.

Essential Requirements

• Hold DV clearance; 10 years continuous UK residency required.
• Minimum 10 years’ boundary security or network security experience.
• Minimum 4 years managing boundary security operations or managed security services.
• Strong background in defence, aerospace or government security programmes.
• Demonstrated expertise with boundary security technologies (firewalls, IDS/IPS, DDoS protection).
• Track record of managing security operations teams and delivering managed services.
• Expert‑level knowledge of firewall technologies, intrusion detection/prevention systems and DDoS mitigation.
• Strong understanding of network security architecture and boundary security design.
• Proficiency in security incident investigation and threat analysis.
• Knowledge of security event management, SIEM and log analysis.
• Understanding of vulnerability assessment and remediation processes.
• Familiarity with MOD security requirements, Classification Guides and defence standards.
• Knowledge of managed service delivery models and SLA management.
• Exceptional leadership and team management capabilities.
• Outstanding customer engagement and communication skills.
• Strong decision‑making under pressure, particularly in security incidents.
• Detail‑oriented with strong focus on SLA compliance.
• Commitment to security excellence and continuous improvement.

Desirable Requirements

• Experience with Palo Alto, Fortinet, Cisco or equivalent enterprise firewalls.
• Experience with DDoS protection and advanced threat protection platforms.
• CISSP or CCNP Security certification.
• Armed Forces or military operations background.
• Experience managing high‑security managed services contracts.

What We Offer

• Highly competitive salary and comprehensive benefits package.
• Enhanced pension and private medical insurance.
• Flexible working and professional development support.
• Opportunity to protect critical UK defence networks.

Application Process & Security Vetting

Applicants must have DV clearance and 10 years continuous UK residency.

Equal Opportunities

DXC Technology is an equal opportunities employer committed to building diverse, inclusive teams.

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